It looks like this Part has been superseded by LEGO Part 44301a Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove.
Click on a colored part below to see the Sets and MOCs that use part 44301b Hinge Plate 1 x 2 Locking with 1 Finger On End, without Groove in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.
There are 3 Mold variations of part 44301b - Hinge Plate 1 x 2 Locking with 1 Finger On End, without Groove in the database, in use between 2013 to 2016. See Molds and other related Parts.